反应详情

To a solution of (5R)-5-(hydroxymethyl)pyrrolidin-2-one (Aldrich, 8.86 g, 77 mmol) in 70 mL of chloroform at room temperature under an argon atmosphere was added ethyl vinyl ether (10.4 mL, 108 mmol) and catalytic anhydrous trifluoroacetic acid (0.2 mL). After stirring for 3 hours, the reaction was partitioned between methylene chloride (150 mL) and aqueous sodium bicarbonate solution (150 mL) and the phases were separated. The organic phase was dried (K2CO3) and filtered. The filtrate was evaporated under reduced pressure to give 14.7 g of the (5R)-5-(1-ethoxyethoxymethyl)pyrrolidin-2-one.

1. customthe reaction was partitioned between methylene chloride (150 mL) and aqueous sodium bicarbonate solution (150 mL)
2. customthe phases were separated
3. dry with materialThe organic phase was dried (K2CO3)
4. filtrationfiltered
5. customThe filtrate was evaporated under reduced pressure